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Kernel: Implement USB Keyboard 

This is kinda hacky, as I had disable the PS/2 initialization so that
usb keyboard gets /dev/keyboard0. I should add device hot plugging
support for TTY and GUI...
This commit is contained in:
Bananymous 2024-07-14 02:09:18 +03:00
parent 1efc6a1385
commit ac5c77ee2c
6 changed files with 256 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
kernel/CMakeLists.txt
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@ -96,6 +96,7 @@ set(KERNEL_SOURCES
kernel/Timer/Timer.cpp
kernel/USB/Device.cpp
kernel/USB/HID/HIDDriver.cpp
kernel/USB/HID/Keyboard.cpp
kernel/USB/USBManager.cpp
kernel/USB/XHCI/Controller.cpp
kernel/USB/XHCI/Device.cpp

34
kernel/include/kernel/USB/HID/Keyboard.h Normal file
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@ -0,0 +1,34 @@
#pragma once
#include <kernel/USB/HID/HIDDriver.h>
namespace Kernel
{
class USBKeyboard final : public USBHIDDevice
{
BAN_NON_COPYABLE(USBKeyboard);
BAN_NON_MOVABLE(USBKeyboard);
public:
void start_report() override;
void stop_report() override;
void handle_variable(uint16_t usage_page, uint16_t usage, int64_t state) override;
void handle_array(uint16_t usage_page, uint16_t usage) override;
private:
USBKeyboard()
: USBHIDDevice(InputDevice::Type::Keyboard)
{}
~USBKeyboard() = default;
private:
BAN::Array<bool, 0x100> m_keyboard_state { false };
BAN::Array<bool, 0x100> m_keyboard_state_temp { false };
uint8_t m_toggle_mask { 0 };
friend class BAN::RefPtr<USBKeyboard>;
};
}

4
kernel/kernel/USB/HID/HIDDriver.cpp
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@ -2,6 +2,7 @@
#include <kernel/FS/DevFS/FileSystem.h>
#include <kernel/USB/HID/HIDDriver.h>
#include <kernel/USB/HID/Keyboard.h>
#define DEBUG_HID 0
@ -218,6 +219,9 @@ namespace Kernel
switch (collection.usage_id)
{
case 0x06:
m_hid_device = TRY(BAN::RefPtr<USBKeyboard>::create());
break;
default:
dwarnln("Unsupported generic descript page usage 0x{2H}", collection.usage_id);
return BAN::Error::from_errno(ENOTSUP);

212
kernel/kernel/USB/HID/Keyboard.cpp Normal file
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@ -0,0 +1,212 @@
#include <kernel/USB/HID/Keyboard.h>
#include <LibInput/KeyEvent.h>
#define DEBUG_KEYBOARD 0
namespace Kernel
{
static BAN::Optional<uint8_t> s_scancode_to_keycode[0x100] {};
static bool s_scancode_to_keycode_initialized = false;
static void initialize_scancode_to_keycode();
void USBKeyboard::start_report()
{
for (auto& val : m_keyboard_state_temp)
val = false;
}
void USBKeyboard::stop_report()
{
using KeyModifier = LibInput::KeyEvent::Modifier;
if (!s_scancode_to_keycode_initialized)
initialize_scancode_to_keycode();
// FIXME: RawKeyEvent probably should only contain keycode.
// Modifier should be determined when converting to KeyEvent.
uint8_t modifier = 0;
if (m_keyboard_state_temp[0xE1])
modifier |= KeyModifier::LShift;
if (m_keyboard_state_temp[0xE5])
modifier |= KeyModifier::RShift;
if (m_keyboard_state_temp[0xE0])
modifier |= KeyModifier::LCtrl;
if (m_keyboard_state_temp[0xE4])
modifier |= KeyModifier::RCtrl;
if (m_keyboard_state_temp[0xE2])
modifier |= KeyModifier::LAlt;
if (m_keyboard_state_temp[0xE6])
modifier |= KeyModifier::RAlt;
if (m_keyboard_state_temp[0x39] && !m_keyboard_state[0x39])
m_toggle_mask ^= KeyModifier::CapsLock;
if (m_keyboard_state_temp[0x47] && !m_keyboard_state[0x47])
m_toggle_mask ^= KeyModifier::ScrollLock;
if (m_keyboard_state_temp[0x53] && !m_keyboard_state[0x53])
m_toggle_mask ^= KeyModifier::NumLock;
modifier |= m_toggle_mask;
for (size_t i = 0; i < m_keyboard_state.size(); i++)
{
if (m_keyboard_state[i] == m_keyboard_state_temp[i])
continue;
const bool pressed = m_keyboard_state_temp[i];
if (pressed)
dprintln_if(DEBUG_KEYBOARD, "{2H}", i);
auto opt_keycode = s_scancode_to_keycode[i];
if (opt_keycode.has_value())
{
LibInput::RawKeyEvent event;
event.keycode = opt_keycode.value();
event.modifier = modifier | (pressed ? KeyModifier::Pressed : 0);
add_event(BAN::ConstByteSpan::from(event));
}
m_keyboard_state[i] = m_keyboard_state_temp[i];
}
}
void USBKeyboard::handle_variable(uint16_t usage_page, uint16_t usage, int64_t state)
{
if (usage_page != 0x07)
{
dprintln_if(DEBUG_KEYBOARD, "Unsupported keyboard usage page {2H}", usage_page);
return;
}
if (usage >= 4 && usage < m_keyboard_state_temp.size())
m_keyboard_state_temp[usage] = state;
}
void USBKeyboard::handle_array(uint16_t usage_page, uint16_t usage)
{
if (usage_page != 0x07)
{
dprintln_if(DEBUG_KEYBOARD, "Unsupported keyboard usage page {2H}", usage_page);
return;
}
if (usage >= 4 && usage < m_keyboard_state_temp.size())
m_keyboard_state_temp[usage] = true;
}
void initialize_scancode_to_keycode()
{
using LibInput::keycode_function;
using LibInput::keycode_normal;
using LibInput::keycode_numpad;
s_scancode_to_keycode[0x35] = keycode_normal(0, 0);
s_scancode_to_keycode[0x1E] = keycode_normal(0, 1);
s_scancode_to_keycode[0x1F] = keycode_normal(0, 2);
s_scancode_to_keycode[0x20] = keycode_normal(0, 3);
s_scancode_to_keycode[0x21] = keycode_normal(0, 4);
s_scancode_to_keycode[0x22] = keycode_normal(0, 5);
s_scancode_to_keycode[0x23] = keycode_normal(0, 6);
s_scancode_to_keycode[0x24] = keycode_normal(0, 7);
s_scancode_to_keycode[0x25] = keycode_normal(0, 8);
s_scancode_to_keycode[0x26] = keycode_normal(0, 9);
s_scancode_to_keycode[0x27] = keycode_normal(0, 10);
s_scancode_to_keycode[0x2D] = keycode_normal(0, 11);
s_scancode_to_keycode[0x2E] = keycode_normal(0, 12);
s_scancode_to_keycode[0x2A] = keycode_normal(0, 13);
s_scancode_to_keycode[0x2B] = keycode_normal(1, 0);
s_scancode_to_keycode[0x14] = keycode_normal(1, 1);
s_scancode_to_keycode[0x1A] = keycode_normal(1, 2);
s_scancode_to_keycode[0x08] = keycode_normal(1, 3);
s_scancode_to_keycode[0x15] = keycode_normal(1, 4);
s_scancode_to_keycode[0x17] = keycode_normal(1, 5);
s_scancode_to_keycode[0x1C] = keycode_normal(1, 6);
s_scancode_to_keycode[0x18] = keycode_normal(1, 7);
s_scancode_to_keycode[0x0C] = keycode_normal(1, 8);
s_scancode_to_keycode[0x12] = keycode_normal(1, 9);
s_scancode_to_keycode[0x13] = keycode_normal(1, 10);
s_scancode_to_keycode[0x2F] = keycode_normal(1, 11);
s_scancode_to_keycode[0x30] = keycode_normal(1, 12);
s_scancode_to_keycode[0x39] = keycode_normal(2, 0);
s_scancode_to_keycode[0x04] = keycode_normal(2, 1);
s_scancode_to_keycode[0x16] = keycode_normal(2, 2);
s_scancode_to_keycode[0x07] = keycode_normal(2, 3);
s_scancode_to_keycode[0x09] = keycode_normal(2, 4);
s_scancode_to_keycode[0x0A] = keycode_normal(2, 5);
s_scancode_to_keycode[0x0B] = keycode_normal(2, 6);
s_scancode_to_keycode[0x0D] = keycode_normal(2, 7);
s_scancode_to_keycode[0x0E] = keycode_normal(2, 8);
s_scancode_to_keycode[0x0F] = keycode_normal(2, 9);
s_scancode_to_keycode[0x33] = keycode_normal(2, 10);
s_scancode_to_keycode[0x34] = keycode_normal(2, 11);
s_scancode_to_keycode[0x31] = keycode_normal(2, 12);
s_scancode_to_keycode[0x28] = keycode_normal(2, 13);
s_scancode_to_keycode[0xE1] = keycode_normal(3, 0);
s_scancode_to_keycode[0x64] = keycode_normal(3, 1);
s_scancode_to_keycode[0x1D] = keycode_normal(3, 2);
s_scancode_to_keycode[0x1B] = keycode_normal(3, 3);
s_scancode_to_keycode[0x06] = keycode_normal(3, 4);
s_scancode_to_keycode[0x19] = keycode_normal(3, 5);
s_scancode_to_keycode[0x05] = keycode_normal(3, 6);
s_scancode_to_keycode[0x11] = keycode_normal(3, 7);
s_scancode_to_keycode[0x10] = keycode_normal(3, 8);
s_scancode_to_keycode[0x36] = keycode_normal(3, 9);
s_scancode_to_keycode[0x37] = keycode_normal(3, 10);
s_scancode_to_keycode[0x38] = keycode_normal(3, 11);
s_scancode_to_keycode[0xE5] = keycode_normal(3, 12);
s_scancode_to_keycode[0xE0] = keycode_normal(4, 1);
s_scancode_to_keycode[0xE3] = keycode_normal(4, 2);
s_scancode_to_keycode[0xE2] = keycode_normal(4, 3);
s_scancode_to_keycode[0x2C] = keycode_normal(4, 4);
s_scancode_to_keycode[0xE6] = keycode_normal(4, 5);
s_scancode_to_keycode[0xE4] = keycode_normal(4, 6);
s_scancode_to_keycode[0x52] = keycode_normal(5, 0);
s_scancode_to_keycode[0x50] = keycode_normal(5, 1);
s_scancode_to_keycode[0x51] = keycode_normal(5, 2);
s_scancode_to_keycode[0x4F] = keycode_normal(5, 3);
s_scancode_to_keycode[0x29] = keycode_function( 0);
s_scancode_to_keycode[0x3A] = keycode_function( 1);
s_scancode_to_keycode[0x3B] = keycode_function( 2);
s_scancode_to_keycode[0x3C] = keycode_function( 3);
s_scancode_to_keycode[0x3D] = keycode_function( 4);
s_scancode_to_keycode[0x3E] = keycode_function( 5);
s_scancode_to_keycode[0x3F] = keycode_function( 6);
s_scancode_to_keycode[0x40] = keycode_function( 7);
s_scancode_to_keycode[0x41] = keycode_function( 8);
s_scancode_to_keycode[0x42] = keycode_function( 9);
s_scancode_to_keycode[0x43] = keycode_function(10);
s_scancode_to_keycode[0x44] = keycode_function(11);
s_scancode_to_keycode[0x45] = keycode_function(12);
s_scancode_to_keycode[0x49] = keycode_function(13);
s_scancode_to_keycode[0x46] = keycode_function(14);
s_scancode_to_keycode[0x4C] = keycode_function(15);
s_scancode_to_keycode[0x4A] = keycode_function(16);
s_scancode_to_keycode[0x4D] = keycode_function(17);
s_scancode_to_keycode[0x4B] = keycode_function(18);
s_scancode_to_keycode[0x4E] = keycode_function(19);
s_scancode_to_keycode[0x53] = keycode_numpad(0, 0);
s_scancode_to_keycode[0x54] = keycode_numpad(0, 1);
s_scancode_to_keycode[0x55] = keycode_numpad(0, 2);
s_scancode_to_keycode[0x56] = keycode_numpad(0, 3);
s_scancode_to_keycode[0x5F] = keycode_numpad(1, 0);
s_scancode_to_keycode[0x60] = keycode_numpad(1, 1);
s_scancode_to_keycode[0x61] = keycode_numpad(1, 2);
s_scancode_to_keycode[0x57] = keycode_numpad(1, 3);
s_scancode_to_keycode[0x5C] = keycode_numpad(2, 0);
s_scancode_to_keycode[0x5D] = keycode_numpad(2, 1);
s_scancode_to_keycode[0x5E] = keycode_numpad(2, 2);
s_scancode_to_keycode[0x59] = keycode_numpad(3, 0);
s_scancode_to_keycode[0x5A] = keycode_numpad(3, 1);
s_scancode_to_keycode[0x5B] = keycode_numpad(3, 2);
s_scancode_to_keycode[0x58] = keycode_numpad(3, 3);
s_scancode_to_keycode[0x62] = keycode_numpad(4, 0);
s_scancode_to_keycode[0x63] = keycode_numpad(4, 1);
s_scancode_to_keycode_initialized = true;
}
}

6
kernel/kernel/kernel.cpp
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@ -201,8 +201,10 @@ static void init2(void*)
// Initialize empty keymap
MUST(LibInput::KeyboardLayout::initialize());
if (auto res = PS2Controller::initialize(); res.is_error())
dprintln("{}", res.error());
// FIXME: initialize PS/2 after USB
//if (auto res = PS2Controller::initialize(); res.is_error())
// dprintln("{}", res.error());
MUST(NetworkManager::initialize());

2
script/qemu.sh
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@ -31,6 +31,6 @@ qemu-system-$QEMU_ARCH \
-drive format=raw,id=disk,file=${BANAN_DISK_IMAGE_PATH},if=none \
-device e1000e,netdev=net \
-netdev user,id=net \
-device qemu-xhci \
-device qemu-xhci -device usb-kbd \
$DISK_ARGS \
$@ \